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-{
- "metadata": {
- "name": "",
- "signature": "sha256:9283b3273e4b25859b1f947b0b70d061842802ddcf82b087896def4a57fa123c"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "<h1>Chapter 1: Semiconductor Basics<h1>"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "<h3>Example 1.1(a), Page Number:29<h3>"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "\n",
- "# variable declaration\n",
- "V_bias=10.0; #bias voltage in volt\n",
- "R_limit=1000; #limiting resistance in ohm\n",
- "r_d =10.0; #r_d value\n",
- "\n",
- "#calculation\n",
- "#IDEAL MODEL\n",
- "print \"IDEAL MODEL\"\n",
- "V_f=0; #voltage in volt\n",
- "I_f=V_bias/R_limit; #foward current\n",
- "V_R_limit=I_f*R_limit; #limiting voltage\n",
- "print \"forward voltage = %.2f volts\" %V_f\n",
- "print \"forward current = %.2f amperes\" %I_f\n",
- "print \"voltage across limiting resistor = %.2f volts\" %V_R_limit\n",
- "\n",
- "#PRACTICAL MODEL\n",
- "print \"\\nPRACTICAL MODEL\"\n",
- "V_f=0.7; #voltage in volt\n",
- "I_f=(V_bias-V_f)/R_limit; #foward current\n",
- "V_R_limit=I_f*R_limit; #limiting voltage\n",
- "print \"forward voltage = %.2f volts\" %V_f\n",
- "print \"forward current = %.3f amperes\" %I_f\n",
- "print \"voltage across limiting resistor = %.2f volts\" %V_R_limit\n",
- "\n",
- "#COMPLETE MODEL\n",
- "print \"\\nCOMPLETE MODEL\"\n",
- "I_f=(V_bias-0.7)/(R_limit+r_d); #foward current\n",
- "V_f=0.7+I_f*r_d; #forward voltage\n",
- "V_R_limit=I_f*R_limit; #limiting voltage\n",
- "print \"forward voltage = %.3f volts\" %V_f\n",
- "print \"forward current = %.3f amperes\" %I_f\n",
- "print \"voltage across limiting resistor = %.2f volts\" %V_R_limit"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "IDEAL MODEL\n",
- "forward voltage = 0.00 volts\n",
- "forward current = 0.01 amperes\n",
- "voltage across limiting resistor = 10.00 volts\n",
- "\n",
- "PRACTICAL MODEL\n",
- "forward voltage = 0.70 volts\n",
- "forward current = 0.009 amperes\n",
- "voltage across limiting resistor = 9.30 volts\n",
- "\n",
- "COMPLETE MODEL\n",
- "forward voltage = 0.792 volts\n",
- "forward current = 0.009 amperes\n",
- "voltage across limiting resistor = 9.21 volts"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "<h3>Example 1.1(b), Page Number:29<h3>"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "\n",
- "# variable declaration\n",
- "V_bias=5; #bias voltage in volt\n",
- "I_R=1*10**-6; #current\n",
- "R_limit=1000 #in Ohm\n",
- "\n",
- "#calculation\n",
- "#IDEAL MODEL\n",
- "print \"IDEAL MODEL\"\n",
- "I_r=0.0; #current in ampere\n",
- "V_R=V_bias; #voltages are equal\n",
- "V_R_limit=I_r*R_limit; #limiting voltage\n",
- "print \"Reverse voltage across diode = %.2f volts\" %V_R\n",
- "print \"Reverse current through diode= %.2f amperes\" %I_r\n",
- "print \"voltage across limiting resistor = %.2f volts\" %V_R_limit\n",
- "\n",
- "#PRACTICAL MODEL\n",
- "print \"\\nPRACTICAL MODEL\"\n",
- "I_r=0.0; #current in ampere\n",
- "V_R=V_bias; #voltages are equal\n",
- "V_R_limit=I_r*R_limit; #limiting voltage\n",
- "print \"Reverse voltage across diode= %.2f volts\" %V_R\n",
- "print \"Reverse current through diode = %.2f amperes\" %I_r\n",
- "print \"voltage across limiting resistor = %.2f volts\" %V_R_limit\n",
- "\n",
- "#COMPLETE MODEL\n",
- "print \"\\nCOMPLETE MODEL\"\n",
- "I_r=I_R; #current in ampere\n",
- "V_R_limit=I_r*R_limit; #limiting voltage\n",
- "V_R=V_bias-V_R_limit; #voltage in volt\n",
- "print \"Reverse voltage across diode = %.3f volts\" %V_R\n",
- "print \"Reverse current through diode = %d micro Amp\" %(I_r*10**6)\n",
- "print \"voltage across limiting resistor = %d mV\" %(V_R_limit*1000)"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "IDEAL MODEL\n",
- "Reverse voltage across diode = 5.00 volts\n",
- "Reverse current through diode= 0.00 amperes\n",
- "voltage across limiting resistor = 0.00 volts\n",
- "\n",
- "PRACTICAL MODEL\n",
- "Reverse voltage across diode= 5.00 volts\n",
- "Reverse current through diode = 0.00 amperes\n",
- "voltage across limiting resistor = 0.00 volts\n",
- "\n",
- "COMPLETE MODEL\n",
- "Reverse voltage across diode = 4.999 volts\n",
- "Reverse current through diode = 1 micro Amp\n",
- "voltage across limiting resistor = 1 mV"
- ]
- }
- ],
- "prompt_number": 2
- }
- ],
- "metadata": {}
- }
- ]
-} \ No newline at end of file